Question

For these equations of straight lines in the form y = mx + c, write down the value of m and c.

(i) y = 3x - 4
(ii) y = -3x + 7.

Answer 1

here we can see clearly,

• y = mx+c is the formula
• y= 3x+4
• answer: m = 3
• c = 4
• y= -3x + 7
• answer: m = -3
• c = 7

Answer 2

see explanation

Explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

(i)

y = 3x - 4

with slope m = 3 and y- intercept c = - 4

(ii)

y = - 3x + 7

with slope m = - 3 and y- intercept c = 7