Masters trail · ages 16+
Slope (gradient) practice
Slope measures how steep a line is: the change in y divided by the change in x. It's central to graphs, rates and calculus.
Number Quest's slope questions practise the formula with clear explanations.
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What the questions practise
- Slope from two points
- Reading slope and y-intercept from y = mx + c
- Positive and negative slopes
Try some example questions
Tap a question to see the answer and how it works.
1. SlopeSlope from (-2, 3) to (2, 0)?-1.3330.25-0.750.75
Answer: -0.75. (0 − 3) / (2 − -2) = -0.75.
2. SlopeWhere does y = x cross the y-axis?(1, 0)(0, 1)(0, -1)(0, 0)
Answer: (0, 0). When x = 0, y = 0.
3. SlopeWhat is the slope of y = 4x + 2?425-4
Answer: 4. The number in front of x is 4.
Tips for parents and teachers
- Subtract in the same order top and bottom.
- Sketch the points.
- Check the sign makes sense.
Why Number Quest
Free, with no ads and no in-app purchases. Five trails from age 5 to 16+, five ways to play, a daily goal that builds a streak, buddies to unlock and a friendly weekly leaderboard. Questions are made fresh on the device, so there is always something new.
An Android app on Google Play is coming soon. Until then, play free right here in your browser.