Algebra - Straight-line graphs
What are the 4 steps for calculating the equation of a straight line on a graph?
-Calculate the gradient of the line -Substitute your value for m (the gradient) into the equation -Pick one point along the line and put the values for the x and y into the equation -Solve your equation to find the value of c
How do you calculate the gradient of a straight line on a graph?
How much the line goes up divided by how much the line goes across
What is m in an equation for a straight line on a graph?
The gradient (How steep the line is)
What is c in an equation for a straight line on a graph?
The y-intercept (Where the line crosses the y-axis)
In an equation for a straight line on a graph, what two letters represent numbers?
m and c
What is the equation for a straight line on a graph?
y = m𝒙 + c