y
=
3
x
4
−
3
Use the slope-intercept form to find the slope and y-intercept.
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Slope:
3
4
Y-Intercept:
−
3
You divide 690 by 100 which is 6.9
Therefore, one 50cent coin is 6.9g
58 stamps is the number she gets each week. So if she went for one week, 58*1=58. 58*2=116 and so on. Because we don't know the exact number of weeks, we say 58w or 58*w because you multiply however many number of weeks she collects.