How do i find the height/altitude of this triangle? need help asap

Write the equation below the represents the line passing through the point (-3, -1) negative one with a slope of 4

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)