Determine the equation of a line that has a slope of -3 and passes through the point (-2, 5).

Question

(0.5 mark for substituting slope value correctly, 0.5 mark for substituting x and y values correctly, 1 mark for isolating and solving for b, 1 mark for writing correct equation)

Answer 1

Use slope-intercept form: y=mx+b

m= -3

(x,y) = (-2,5)

plug all values into slope-intercept form and solve for b.

5=-3(-2)+b

5= 6+b

b= -1

Write your final answer using slope intercept with your slope and your new b-value.

y= -3x -1