Question

3. A public pool charges a membership fee and a fee for each visit. The equation y 3x + 50 represents the cost y for x visits. After locating the y-intercept on the coordinate plane shown, can you move up three gridlines and right one gridline to find a second point? Explain. a. 250t 200 e 150 100 50 50 150 250 b. Graph the equation y interpret the slope and y-intercept. 3x + 50, include axis labels. Then How many visits to the pool can a member get for $200? 100 c. Work Area EOGLUS ON HIGHER ORDER THINKING

Answer 1

(a) y = 3x + 50 y (0) = 3 times 0 + 50 if you can movie up three times then y value is increses 3 times 50 now y value is, y = 3 times 50 + 50 this is value at x = 50 but you can movie right one gridline then this is value at x = 25 so if you can movie right two grid lines then value is agrre at x = 50 so you can not get second point y = 3x + 50 it is stright line in the form, y = mx + c y-intercept = c = 50 y-intercept means fixed cost for visit slope = m = 3 slope means change in cost of visit with respect to change no of visits is 3 y = 200 3x + 50 = 200 x = 50