Example Find the equation of the line that goes through the points (−1, 3) and (3, 11). Sketch the two points and join them with a straight line.

Now try the example questions below. Use the equation of the line of best fit to estimate Jill's score in her science test if she scored 14 in her Maths test. The general equation for a straight ...

So x + 4 is an expression describing a straight line, but (x + 4 ... s understanding of how quadratic equations work and how they fit into math. Understanding them is key to the beginning ideas of ...