Quote:The equation of a line is
y = -1/2x + 3
If y = 5 , show 2 different methods for solving x

We have two methods one is direct substitution of value of y and solving it for x other is graphical method

Method 1

Putting y=5
5 = -1/2 x+3
Subtracting 3 from both sides
2= -1/2 x
or x = -4

Method 2

Second method it to draw the graph and , just note the value of x corresponding to y =5

I have drawn the graph , just see the value of x at y=5 , its -4