In the xy-plane, what is the x-intercept of the line whose equation is 3y – 4x = 15?
~$-\frac{15}{4}$~
~$-\frac{4}{3}$~
~$\frac{4}{3}$~
~$\frac{15}{4}$~
5
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截距有正负
问的是x的截距 审题!!!
还原成标准斜率方程y=4/3X+5. x-intercept of the line 就是求当y=0时X的值, y-intercept道理一样
截距有正负
问的是x的截距 审题!!!
还原成标准斜率方程y=4/3X+5.
x-intercept of the line 就是求当y=0时X的值, y-intercept道理一样