Linear Graphs Quiz

1. What is the gradient of the line joining $(2,1)$ and $(5,10)$?

• A. 3
• B. 9
• C. 1/3
• D. -3

2. What is the $y$-intercept of $y = -2x + 7$?

• A. -2
• B. 7
• C. 0
• D. -7

3. A line is parallel to $y=5x+2$. What is its gradient?

• A. 5
• B. -5
• C. 1/5
• D. 2

4. A line has gradient $\frac{2}{3}$. What is the gradient of a line perpendicular to it?

• A. $\frac{2}{3}$
• B. $\frac{3}{2}$
• C. $-\frac{3}{2}$
• D. $-\frac{2}{3}$

5. Find the equation of the line perpendicular to $y=2x+1$ that passes through $(4, 3)$.

• A. $y=2x-5$
• B. $y=-\frac{1}{2}x+5$
• C. $y=-2x+11$
• D. $y=\frac{1}{2}x+1$