Ok so we can see for every 2 cups of medium coffee, the balance goes down 5.30$. So that means that for every coffee, her balance goes down 2.65$. Solving for the x-intercept means how many medium coffees can I get until my balance is 0. First, we have to find the y-int so it's easy. The slope is -2.65 because for every medium coffee, her balance goes down 2.65$. So we have y=-2.65x+b. Plugging in any point, I choose (4,14.40), we get 14.4 = -2.65 × 4 +b. Solving for b we get 25 for the y intercept, meaning the equation is y = -2.65x + 25 . To find the x intercept, we set y=0. So we have 0 = -2.65x+25. Solving for x we get approx. 9.4. We can't have decimals so we round down to 9. So the x int is ≈ 9.4 meaning we can only buy 9 coffee and have a little extra. But, if the problem said how many more coffees can she get, then here is how we do it. Since she already got 4 coffees, and the max is 9, we do 9-4 and we get 5, so she can buy 5 coffeed more.
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➷ We have 2 points which we can use to figure out the slope
slope = difference in y values/ difference in x values
Substitute in the values you have:
0 - 5/ 3 - 0
slope = -5/3
The y intercept is simply where the line crosses the y axis
In this case, it is 5
Therefore, your equation is y = -5/3x + 5
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Answer:
6
Step-by-step explanation:
2x3 is 6
that is how i do it anyways
this is because every sandwich can get 3 drinks
so
2x3
The missing symbol is an equal sign
Answer:
y=x+3
Step-by-step explanation:
the line crosses the x axis at -3, this means you would do y=x-(-3) for the equation, therefore y=x+3