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8 votes
8 votes
Is (8, 7) a solution of y > 4x − 6?

No, (8, 7) is not a solution of y > 4x − 6.
Yes, (8, 7) is a solution of y > 4x − 6.

User Fruny
by
2.7k points

2 Answers

6 votes
6 votes

Use the slope-intercept form to find the slope and y-intercept.

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The slope-intercept form is

y

=

m

x

+

b

, where

m

is the slope and

b

is the y-intercept.

y

=

m

x

+

b

Find the values of

m

and

b

using the form

y

=

m

x

+

b

.

m

=

4

b

=

6

The slope of the line is the value of

m

, and the y-intercept is the value of

b

.

Slope:

4

y-intercept:

(

0

,

6

)

Any line can be graphed using two points. Select two

x

values, and plug them into the equation to find the corresponding

y

values.

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Find the x-intercept.

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To find the x-intercept(s), substitute in

0

for

y

and solve for

x

.

0

=

4

x

6

Solve the equation.

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Rewrite the equation as

4

x

6

=

0

.

4

x

6

=

0

Add

6

to both sides of the equation.

4

x

=

6

Divide each term by

4

and simplify.

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Divide each term in

4

x

=

6

by

4

.

4

x

4

=

6

4

Cancel the common factor of

4

.

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Cancel the common factor.

4

x

4

=

6

4

Divide

x

by

1

.

x

=

6

4

Cancel the common factor of

6

and

4

.

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Factor

2

out of

6

.

x

=

2

(

3

)

4

Cancel the common factors.

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Factor

2

out of

4

.

x

=

2

3

2

2

Cancel the common factor.

x

=

2

3

2

2

Rewrite the expression.

x

=

3

2

x-intercept(s) in point form.

x-intercept(s):

(

3

2

,

0

)

Find the y-intercept.

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To find the y-intercept(s), substitute in

0

for

x

and solve for

y

.

y

=

4

(

0

)

6

Solve the equation.

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Remove parentheses.

y

=

4

(

0

)

6

Simplify

4

(

0

)

6

.

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Multiply

4

by

0

.

y

=

0

6

Subtract

6

from

0

.

y

=

6

y-intercept(s) in point form.

y-intercept(s):

(

0

,

6

)

Create a table of the

x

and

y

values.

x

y

0

6

3

2

0

Graph the line using the slope and the y-intercept, or the points.

Slope:

4

y-intercept:

(

0

,

6

)

x

y

0

6

3

2

0

User Superruzafa
by
3.4k points
27 votes
27 votes

Answer:

no

Step-by-step

User DavidGouge
by
3.1k points