If there is a solution, y=y so we can say:
1.5x-1=1 add 1 to both sides
1.5x=2 divide both sides by 1.5
x=2/1.5
x=4/3 (exact)
x=1 1/3 (exact)
x≈1.33 (to nearest hundredth of a unit)
Y2 - y1 over x2 - x1 = slope
2 - (-1) = 3
-1 - 2 = -3
the slope is 3/-3, or -1
y = -x
2 = 1 + 1
The equation of the line is y = -x + 1
Answer: 
Step-by-step explanation:
1) Find Slope: 
2) Write the point-slope form equation (Answer): 
3) Graph:
Answer:
40
Step-by-step explanation:
Let the number be y
-1/2 × y = -20
y = -20 ÷ -1/2
y = 20 × 2
y = 40