Question

A line has a slope of 3/5. It passes through the points (1, 2) and ( k, 8). What is the value of k?

Answer 1

Answer:

11

Step-by-step explanation:

the equation for a line is y=mx+c

m is the gradient, c is where it touches the y axis.

y and x are the points on the graph.

therefore, y=3/5x+c

you can substitute the point they've given you (1,2)

2=3/5(1)+c

this will give you c=7/5

you can now substitute the new point into the equation

8=3/5k+7/5

which can be rearranged to k=11