Answer:
Step-by-step explanation:
1) 3x + y = 3
y = -3x + 3
When x = 0 ; y = 0 +3 = 3 (0 , 3)
When x = 1 ; y = -3*1 + 3 = -3 + 3 = 0 (1 , 0)
When x = 2 ; y = -3*2 + 3 = -6 +3 = -3 (2 , -3)
Plot the points (0 ,3 ) ; (1 ,0) and (2 , -3) in the graph and join them
2) y = x + 3
When x = 0 ; y = 0 +3 = 3 (0 , 3)
When x = 1 ; y = 1 + 3 = 4 (1 , 4)
When x = -3 ; y = - 3 + 3 = 0 (-3 , 0)
Plot the points (0,3) , (1, 4) and (-3 , 0) in the graph and join them
3) Plug in (4 , y) int he equation
y = x + 5
y = 4 + 5
y = 9
y = 9
5) 2x + y = 3
At x-intercept y = 0
2x + 0 = 3
2x = 3
x = 3/2
