11.1 Coordinates and plotting graphs — Practise

Work independently in order. The later questions mix this section with earlier methods. Questions marked H are Higher only.

1. Plot the point $(3,-2)$ on a coordinate grid. State its horizontal and vertical coordinates.
2. State the quadrant containing $(-4,5)$.
3. Complete the table for $y=2x+1$ when $x=-1,0,2$.
4. For $y=x+2$, find $y$ when $x=-2,1,3$.
5. Give three points on the line $y=3x$ for $x=-1,0,2$.
6. The graph $y=x-4$ crosses the horizontal axis at which point?
7. For $y=5-x$, complete the values when $x=0,2,5$.
8. A point $(a,b)$ is reflected in the $x$-axis. State the image coordinates.
9. Does $(2,7)$ lie on $y=3x+1$? Show a substitution check.
10. H Find the midpoint of $(2,5)$ and $(8,-1)$.