The value of the card was $13 when he originally purchased it.
Yes you should subtract 2 from the sides
Answer:
4x + 3y
Step-by-step explanation:
Answer:
u = 119
Step-by-step explanation:
The sum of the angles of a triangle add to 180
31+ u-40 + u-49 = 180
Combine like terms
2u -58 = 180
Add 58 to each side
2u-58+58 = 180+58
2u =238
Divide each side by 2
2u/2 = 238/2
u =119
Answer:
A. Yes they do. Both equations have their opposing set of y-intercept. Where equation one has a y-intercept of +7, and equation two, +7.
B. No they do not. Equation one has a slope of +3, while equation 2 has a slope of -4.
C. Yes they do. Equation one represents that of a positive increasing graph, while equation two the opposite, decreasing.
Step-by-step explanation:
You can use the slope formula to identify and graph each equation simply by using y = mx + b. Where y is the the y coordinate, x is the x coordinate, m is the slope, and b is the y-intercept. With this you can start plotting by marking the y-intercept by putting the x as zero and seeing what number you get. In this case, 3x0-7 = -7. Meaning that would be the y-intercept. For the slope, depending on what the x coordinate is, that's how much the graph will increase or decrease whenever the x coordinate changes. Say the x coordinate is 1, so 3x1-7 = 3-7 = -4. Meaning your coordinate would be (1, -4) where you can keep doing this formula on and on to find the y coordinate for what x coordinate you want to find, or make it easier to graph with a ruler on paper once you have enough points.
