Question

G(x)= 81-3x?
what are the x and y intercepts?

Answer 1

x - intercept : (27,0)

y- intercept : (0,81)

Explanation:

`g(x)=81-3x`

you can rearrange the right side to make the equation look like y=mx+b

`g(x)=-3x+81`

According to y=mx+b, b is the y-intercept

∴ (0,81) is the y-intercept of the equation

To find the x-intercept, plug in 0 for y and solve for x

`g(0)=-3x+81\\-81 = -3x\\x = 27`

∴ (27,0) is the x-intercept of the equation