Question

Determine the intercepts of the line.
y = 8x – 18

y-intercept:
X-intercept:

Answer 1

y intercept: (0, -18)

x intercept: (2.25, 0)

Explanation:

When the equation is already in y=mx+b form, the y intercept is b which is given to be -18.

For the x intercept, the y value will have to be 0 because it is on the x axis. So we can set the y value to 0 and solve for x.

0=8x-18

add 18 to both sides

8x=18

x=2.5

Answer 2

x intercept = 9/4

y intercept = -18

Explanation:

To find the x intercept set y = 0 and solve for x

0 = 8x – 18

Add 18 to each side

18 = 8x

Divide each side by 8

18/8 = 8x/8

9/4 = x

To find the y intercept set x = 0 and solve for y

y = 0 – 18

y = -18