How do you find slope given the graph of a line on grid

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Find an equation for the linear function which has slope -10 and x-intercept -7

In triangles abc and wxy, a=w and b=x which of the following must be true to prove abc=wxy by the aas theorem? a.ab=bc b.bc=xy c.ab=wx d.