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Pleeeeeaaaaase i am stuck 99 points for whoever solves it

Pleeeeeaaaaase i am stuck 99 points for whoever solves it-example-1
Pleeeeeaaaaase i am stuck 99 points for whoever solves it-example-1
Pleeeeeaaaaase i am stuck 99 points for whoever solves it-example-2
Pleeeeeaaaaase i am stuck 99 points for whoever solves it-example-3
Pleeeeeaaaaase i am stuck 99 points for whoever solves it-example-4
Pleeeeeaaaaase i am stuck 99 points for whoever solves it-example-5

2 Answers

1 vote

Answer:

please see answers below

Explanation:

equation of a straight line is given by y= mx + c (where m is gradient-slope, c is y-axis intercept)

you have to measure the slope (change in y values ÷ change in x values).

you have to find where graph crosses the y-axis (y-axis intercept).

pick two sets of coordinates for each line (graph).

1) coordinates are (0,2) and (10,7).

slope = (change in y values ÷ change in x values)

= (7 - 2) / (10 - 0) = 5/10 = 1/2.

it crosses the y-axis at y = 2.

the equation is y = (1/2)x + 2.

2) coordinates are (0, -3) and (2, 5).

slope = (-3 - 5) / (0 - 2)

= -8 / -2

= +4

=4.

it crosses the y-axis at y = -3

the equation is y = 4x - 3

3) coordinates are (-1, 0) and (1, -2)

slope = (-2 - 0) / (1 - -1)

= -2 / (1 + 1)

= -2 /2

= -1 .

it crosses the y-axis at y = -1

the equation is y = -x - 1

4) coordinates are (-1, 2) and (0, -1)

slope = (-1 - 2) / (0 - -1)

= -3 / (0 + 1)

= -3/1

= -3.

it crosses the y-axis at y = -1

the equation is y = -3x - 1

5) coordinates are (4, 0) and (0, 2).

slope = (2 - 0) / (0 - 4)

= 2/-4

= -1/2

it crosses the y-axis at y = 2

the equation is y = -(1/2)x + 2

hope these answers help you. good luck

User Bhavinjr
by
8.0k points
0 votes
The first image is y=4x-3
The second one is y=-3x-1
3rd is y =-x-1
4th is y=0.5x+2
Hope this helps
User MichealAtmi
by
7.9k points

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