y=2x has a slope of 2 and a y-intercept of 0 so plot a line with a slope of 2 and a y-intercept of 0, as shown below by the blue line.
y=x has a slope of 1 and a y-intercept of 0 so plot a line with a slope of 1 and a y-intercept of 0, as shown below by the red line.
y=4x has a slope of 4 and a y-intercept of 0 so plot a line with a slope of 4 and a y-intercept of 0, as shown below by the dark green line.
y=0.1x has a slope of 0.1 = 110
and a y-intercept of 0 so plot a line with a slope of 110
and a y-intercept of 0, as shown below by the orange line.
y=12x
x has a slope of 12
and a y-intercept of 0 so plot a line with a slope of
y=30x has a slope of 30 and a y-intercept of 0 so plot a line with a slope of 30 and a y-intercept of 0, as shown below by the pink line.
y=13x
x has a slope of 13
and a y-intercept of 0 so plot a line with a slope of
y=3x has a slope of 3 and a y-intercept of 0 so plot a line with a slope of 3 and a y-intercept of 0, as shown below by the yellow line.
To find the angles of inclination, you can either use a protractor to measure the angles between the x-axis and each line or you can use the formula
Your measurements won't be very accurate if you use a protractor so you should use the formula if you need to give accurate angles. If
For y=2x, the slope of m = 2 so
For y=x, the slope of m = 1 so
For y=4x, the slope of m = 4 so
For y=0.1x, the slope of m = 1 so
For
For y=39x, the slope of m = 30 so
For y=(1.3)x, the slope of
For y=3x, the slope of m = 3 so
For
Perform the indicated operations and express answers in simplest radical form.