Answer:
14. y = 6x - 5
15. y = -4x - 24
Step-by-step explanation:
The slope-intercept form of an equation of a line:
![y=mx+b](https://img.qammunity.org/2019/formulas/mathematics/college/hmt7wxoetxgettvoxgzsv2e1z1jn04v2qq.png)
m - slope
b - y-intercet → (0, b)
The formula of a slope:
![m=\sdeac{y_2-y_1}{x_2-x_1}](https://img.qammunity.org/2019/formulas/mathematics/middle-school/tgvguz6xhg8a3q697iyynblpj38urjkqyk.png)
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14.
(2, 7), (0, -5) → b = -5
Calculate the slope:
![m=(-5-7)/(0-2)=(-12)/(-2)=6](https://img.qammunity.org/2019/formulas/mathematics/middle-school/v6th2kumfc3mbjruazk37vxmhupado0nfe.png)
The equation of a line:
![y=6x-5](https://img.qammunity.org/2019/formulas/mathematics/middle-school/ey405aiet0jvjo35jgdiyr6khtkam3iaam.png)
15.
(-6, 0), (0, -24) → b = -24
Calculate the slope:
![m=(-24-0)/(0-(-6))=(-24)/(6)=-4](https://img.qammunity.org/2019/formulas/mathematics/middle-school/w1i0k871z3umg5kcvm10955t47b4yoainb.png)
The equation of a line:
![y=-4x-24](https://img.qammunity.org/2019/formulas/mathematics/middle-school/3q1sqevze7eit0rtda2y69x13ycbd8wbtc.png)