What are the x and y intercepts? how do i do this type of problem? there's a substitute teacher and he doesn't know how to teach

You would figure this out using y=mx+b form

Let me explain #1:

y=2(x-4)^2-3

the x intercept would be (x-4)^2

the y intercept would be -3

the x and y intercept are where the line crosses the x or y axis

if you don't understand, try graphing it! A good website is Desmos.

Hope I helped,

8th Grade Algebra 1 student

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

step-by-step explanation: