We are given a graph that represents the cost y in dollars to open an online gaming account and buy x games.
To find the slope of the line, we need to choose two points on it. Let's start by substituting the points (0,15) and (9,105) into the slope formula and calculating m.
We calculated that the slope of the given line is 10, which means that each game costs 10 dollars. Now let's find the y-intercept. Remember that the y-intercept is the y-value where the line crosses the y-axis.
We can see that the function intercepts the y-axis at (0, 15). This means that the value of b is 15. The y-intercept shows that it costs 15 dollars to open an online gaming account before buying any games.
This type of equation contains at least one linear term and any number of constants. Let's see a few examples!
& y=2x+1
& 3x=6 +3
& 2y+x=4
More information about the different types of linear equations and their graphs can be found on the following pages.
