2.1 Equations of straight lines Quiz

1. Find the gradient of $6x + 2y - 7 = 0$.

• A. $6$
• B. $3$
• C. $-3$
• D. $-\frac13$

2. Which line is parallel to $y = 4x - 1$?

• A. $y = -4x + 1$
• B. $8x - 2y + 5 = 0$
• C. $y = \frac14x$
• D. $4y = x$

3. Which gradient is perpendicular to a line of gradient $\frac23$?

• A. $\frac32$
• B. $-\frac23$
• C. $-\frac32$
• D. $\frac23$

4. Find the equation of the line through $(1, -2)$ and $(3, 4)$.

• A. $y = 3x - 5$
• B. $y = 3x + 1$
• C. $y = \frac13x - \frac73$
• D. $y = -3x + 1$

5. A bridge approach rises 1.5 m over 25 m horizontally. What is its percentage gradient?

• A. $1.5\%$
• B. $16.7\%$
• C. $6\%$
• D. $0.06\%$